G9D03:In which direction is the maximum radiation from a VHF/UHF “halo” antenna?
Direct answer summary (2023-2027 NCVEC pool)
The official correct answer for G9D03 is Omnidirectional in the plane of the halo.
The key fact is Omnidirectional in the plane of the halo. Match that fact to the exact condition in the question; the other choices describe a different rule, band, component, or operating situation.